Before the furniture store began its ad campaign, it averaged 153 customers per day. The manager is investigating if the average is smaller since the ad came out. The data for the 12 randomly selected days since the ad campaign began is shown below: 132, 163, 158, 155, 146, 163, 150, 138, 133, 146, 144, 147 Assuming that the distribution is normal, what can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: Select an answer H1: Select an answer c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is (? f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... The data suggest the populaton mean is significantly less than 153 at a = 0.01, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is less than 153. The data suggest the population mean is not significantly less than 153 at a = 0.01, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is equal to 153. The data suggest that the population mean number of customers since the ad campaign began is not significantly less than 153 at a = 0.01, so there is insufficient evidence to conclude that the population mean number of customers since the ad campaign began is less than 153.
Before the furniture store began its ad campaign, it averaged 153 customers per day. The manager is investigating if the average is smaller since the ad came out. The data for the 12 randomly selected days since the ad campaign began is shown below: 132, 163, 158, 155, 146, 163, 150, 138, 133, 146, 144, 147 Assuming that the distribution is normal, what can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: Select an answer H1: Select an answer c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is (? f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... The data suggest the populaton mean is significantly less than 153 at a = 0.01, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is less than 153. The data suggest the population mean is not significantly less than 153 at a = 0.01, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is equal to 153. The data suggest that the population mean number of customers since the ad campaign began is not significantly less than 153 at a = 0.01, so there is insufficient evidence to conclude that the population mean number of customers since the ad campaign began is less than 153.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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